Apparatus for forming cement boxes.



T. H. WILLIAMS. APPARATUS FOR FORMING CEMENT BOXES.

APPLICATION FILED SEPT.10,1908.

Patented May 25, 1909.

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APPLIOATION FILED SEPT. 10,1908.

Patented May 25, 1909.

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UNITED PATENT @FFliCE.

THOMAS H. WILLIAMS, OF UTIO A, NEW YORK.

APPARATUS FOR FORMING CEMENT BOXES.

To all whom it may concern:

Be it known that I, THOMAS H. lViLLIAMs, of Utica, in the county of Oneida and State of New York, have invented certain new and useful Improvements in Apparatus for Forming Cement Boxes; and I do hereby declare that the following is a full, clear, and exact description thereof, which will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the characters of reference marked thereon, which form part of this specification.

The object of my present invention is to provide an improved apparatus for making boxes, and particularly outside burial cases of cement or concrete in an easy, economical and expeditious manner, and including means for handling the boXes while green without danger of breakage or injury.

Figure 1 shows a side elevation of the apparatus employed in my process, with the green sand core formed therein. Fig. 2 is a plan view of the same. Fig. 3 is a cross sectional view. Fig. 4 is an end view. Fig. 5 is a side elevation of the apparatus in casting condition and position. Fig. 6 is a plan view of the main frame, constituting a portion of the construction, together with removable flange forming molding strips in position therein. Fig. 7 is a cross sectional view after the casting has been made, showing a cross sectional view of the boX in position therein. Fig. 8 is an end view with the apparatus in casting or forming position. Fig. 9 is an enlarged detail section of the edge forming molding. Fig. 10 is a cross section of the same taken on line 101 0 of Fig. 9.

Referring to the reference letters and figures in a more particular description, 11 indicates a strong frame of rectangular form rabbeted around its inner edge to receive the edge forming molding strip 12, which is only partially or slightly received in the rabbeted edge. The frame 11 is provided preferably adjacent to each end with curved rockers 13 permanently secured thereto on the opposite side from that of the rabbeted edge before referred to. For forming the core the frame 11 is placed in a horizontal position supported somewhat above the floor and the removable.

sides 14, 14, together with the removable ends 1 5, 15 applied and secured in position. For the purpose of locating, and, in a measure, securing the sides in position on the frame 1 1, they are respectively provided with a pair of pins Specification of Letters Patent.

Application filed September 10, 1908.

Patented May 25, 1909.

Serial No. 52/i62.

1 adapted to enter openings 17 in the frame, and the lower edge of the side is adapted to occupy the rabbeted edge of the frame 11 before mentioned. The ends 15 are received between the ends of the sides 1a and the sides and ends may be clamped and secured firmly together by transverse bolts 18 at each end and a stay rod 19 across the top. The walls let and ends 115 face inwardly and will register preferably with the inner face of the frame 11.

When arranged as described and as shown in Figs. 1, 2 and 4, the frame 11 will be supported somewhat above the floor by the rockers 1'3 and the whole will be preferably secured in an upright position; that is to say, with the frame 11 in a substantially horizontal position, by blocks as a applied to the rockers 13. When in this position the green sand core A is formed by filling the core mold full of sand and ramming it down to the desired consistency. Of course, in filling the mold, a certain amount of sand is required to build up a support under the frame, as indicated at A, on which the sand core is supported.

In forming the sand core and just before its final completion, it will preferably be provided with small grooves as Z) in its upper surface, in order to form ribs on the interior of the bottom of the case when cast. These grooves may be formed by the use of a trowel in the hands of the operator, or by a stake of the desired form being forced down into the exposed surface of the core. The height of the walls 14 and ends 15 will preferably be such as to serve as a guide for evening off the top of the sand core A. W hen the core A has been formed, the bolts 18 and 1.9 are removed and the sides 141 and ends 15 are removed, leaving the core A standing up through the frame 1.] The casting sides 20 and ends 21 are then applied to the frame 11.

Before applying these sides and ends, however, the edge molding strip 1.2 is placed in position in the rabbet and adjacent to the sand core, the same being joined and formed, as hereinafter pointed out, to facilitate its being readily placed as well as removed. The sides 20 are provided with pins 22 entering the same holes 17 in the frame and serving to locate the position of the sides on the frame 11. Viith reference to the sides 20, however, the pins 22 lay close against the outside of the side, whereas with reference to the core forming sides 14- it will be ob served that they are blocked out considerably, so that the sides take a position considerably inside of the position taken by the sides 20. The ends 21 are clamped between the extending ends of the sides 20 by means of bolts 23, 23. The bolts 23 at one end will also preferably be employed to secure in position a second pair of rockers 24 applied across the ends of one of the sides 20. These rockers are provided with angular brackets 25, by means of which they can thus be secured. The sides 20 and the ends 21 of the casting frame being applied on the top of the frame 10 further out than were the walls 14 with ends 15, it is obvious that a sufficient space is afforded between the sides and ends o the sand core A and the inner face of these walls and ends to form a mold for the walls of the box or case. The height of the sides 20 and the ends 21 is also greater than that of the walls 14 and 15, whereby the former project sui'liciently above the plane of the to y of' the sand core A to provide for the thickness of the bottom of the cast box or case. If the walls of the box or case are to be strengthened with a metal mesh, as, for instance, ex anded metal, such a one as indicated by may be introduced in position at this stage and suitably located by securing it in position with strings and blocks or either. The mold is now filled with liquid or semi-liquid cement or concrete until the uper surface thereof is level or substantially evel with the upper edges of the sides 20 and ends 21, when it may be smoothed and leveled off by an operator with a trowel or other suitable tool. Thus a casting of the form shown by C in cross section in Fig. 7 is.

secured. When the cement has set in the course of a few hours, although the box is still green, the sand core is removed without disturbing the position of the parts, as shown in Figs. 5, 7 and 8, by shoveling away the sand. from the mound A and removing the same as it falls downwardly from the interior of the box. After the core has thus been removed, a third pair of rockers 30 are applied. These rockers consist of the curved.

member secured on a base piece 31 and having a brace 32. The bases 31 are applied crosswise on to of the form and resting directly on the ottom of the green box C, and may be temporarily secured to the sides 20 by being provided with hasps 33 at each end. The form may be carefully rolled over from the rockers 13 onto the rockers 2 1, and

thence onto the rockers 31, when the green box will be in upright position, resting on the rockers 31. The frame 11 with its rockers will then be lifted off and the sides 20 and ends 21, together with the rockers 24, loosened and disconnnected and removed. This leaves the green box standing on the two rockers 30 with their immediate accessories ready for a repetition of the casting process, except as to the edge molding 12, which can be readily and at once removed by removing inwardly the side strips 12 and then the corner pieces 12.

The construction of the edge molder 12 is quite important in allowing it to be applied and-removed, particularly when an undercut bead on the edge of the box is to be formed. To this end the sides 12 and the corner 12 are made separate and joined by an angular out as 12*, the cuts 12 inclining outwardly from the corner. This enables the sides 0 be readily first removed, even from an overhanging edge, and then the corners without trouble or without injury to the casting. .ln placing the edge molders in the main frame 11, the corner pieces will be placed in position first.

In casting boxes or burial cases of the character herein referred to, the green sand core A is quite important in facilitating the rapid production of the product. The cement being introduced into the form in a liquid state, it contains a large quantity of surplus water, which the bulky green sand core begins to absorb at once and facilitates the eliminating of the water from the casting, and the cement sets into what is termed the green state with sufficient rapidity to allow the apparatus and box to be handled in a short period of time after the mold is filled.

The molding machine or apparatus herein shown and described not only provides for the formation of the sand core rapidly and expeditiously and then forming the casting box around the core and suitably located with reference thereto, but enables the casting to be gently rolled over and handled with out shock or danger of breaking while it is in still a green state, requiring a considerable time for setting before it would be in condition for use. The major part of the apparatus becomes almost immediately available for use for repeating the casting process, and thus a small amount of equipment is required to produce the boxes or cases in considerable quantities.

What I claim as new and desire to secure by Letters Patent is:

1. In a molding apparatus the combination of a frame having an opening therethrough and means for supporting it above the floor, removable inwardly facing sand core mold walls adapted to be applied to said frame adjacent to the opening, and mold forming walls adapted to be applied to said frame at a point removed from the inner edge of the frame, substantially as set forth.

2. In an apparatus for forming boxes of concrete the combination of a main frame having an opening therethrough, inwardly frame and said walls, substantially as set forth.

3. I11 a casting apparatus of the character described the combination of a frame having an opening therethrough, means for supporting it in substantially horizontal position, removable inwardly facing sand core molding walls adapted to be applied to the frame and removable mold forming walls adapted to be applied to the frame surrounding the core at a distance therefrom, substantially as set forth.

l. In a box casting apparatus of the character described the combination of a frame having an opening therethrough and rockers walls and a third pair of rockers constituting another segment of the circle adapted to be applied to the casting, substantially as set forth.

5. In a casting apparatus of the character described, the combination of a frame having an opening therethrough and a rabbeted edge surrounding the opening, an edge forming mold consisting of outwardly facing strips 12 and independent corner blocks 12 joining the ends of the strips 12 by miter joints, the strips and corner locks fitting in the rabbeted edge, removable sand core inwardly facing molding walls adapted to be applied to the frame in an inner position and removable mold forming walls adapted to be applied to the frame in an outer position, substantially as set forth.

In witness whereof, I have affixed my signature, in presence of two witnesses, this 7th day of September 1908.

THOMAS H. WILLIAMS.

Witnesses S. I. DE VINE, W. H. WELLEs. 

